SE00014EN
Installation of the Pratt & Whitney Engine Services, Inc. CrossCheck Engine Monitor Kit P/N HUMS-K-071-1, Rev. A on the specified PT6A engine models and kit P/N HUMS-K-071-2 on the specified A250 engine models. Held by Pratt & Whitney Engine Services INC., which holds 48 approved modifications in all. Last revised October 22, 2007. System: engine.
What it applies to
- Kind of product
- Engine
- Design holder
- Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Pratt & Whitney Canada Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Allison Engine Company Inc.; Rolls-Royce Corporation; Rolls-Royce Corporation; Rolls-Royce Corporation; Rolls-Royce Corporation; Rolls-Royce Corporation
- Models
- PT6A-65B, PT6A-50, PT6A-21, PT6A-6B, PT6A-65AR, PT6A-65R, PT6A-61, PT6A-15AG, PT6A-110, PT6A-20, PT6A-28, PT6A-6A, PT6A-6, PT6A-60, PT6A-45R, PT6A-45A, PT6A-41AG, PT6A-11, PT6A-11AG, PT6A-114, PT6A-65AG, PT6A-27, PT6A-34, PT6A-135A, PT6A-34B, PT6A-38, PT6A-40, PT6A-114A, PT6A-25, PT6A-112, PT6A-42, PT6A-41, PT6A-25A, PT6A-135, PT6A-36, PT6A-34AG, PT6A-25C, PT6A-60A, PT6A-45B, PT6A-20A, PT6A-20B, 250-C20F, 250-C20R, 250-C20R/2, 250-C20W, 250-C20B, 250-C20J, 250-C20R/1, 250-C20R/4, 250-C28C, 250-C30G, 250-C30S, 250-C28B, 250-C30
- Type certificates
- E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4EA, E4CE, E4CE, E4CE, E4CE, E4CE, E4CE, E4CE, E4CE, E1GL, E1GL, E1GL, E1GL, E1GL
- The FAA's record
- On the FAA's site
What an approved modification is
A supplemental type certificate is the FAA's approval of a change to a certified design: a new engine or propeller, avionics, an autopilot, floats, a parachute, a larger fuel tank, an ice-protection kit. The company holding it may sell the kit and the paperwork to owners of the listed models; the modification then becomes part of that aircraft's record. The FAA's list says what was approved and for which models, not how many aircraft carry it.
Source: FAA supplemental type certificates (Dynamic Regulatory System). Register counts from the FAA register of October 5, 2026.